Support sqlite columns that have string manipulation as a default

Author: rdubya

lib/arjdbc/sqlite3/adapter.rb

@@ -469,7 +469,7 @@ def extract_default_function(default_value, default)
     end
 
     def has_default_function?(default_value, default)
-      !default_value && %r{\w+\(.*\)|CURRENT_TIME|CURRENT_DATE|CURRENT_TIMESTAMP}.match?(default)
+      !default_value && %r{\w+\(.*\)|CURRENT_TIME|CURRENT_DATE|CURRENT_TIMESTAMP|\|\|}.match?(default)
     end
 
     # See: https://www.sqlite.org/lang_altertable.html